DM74LS158N
DM74LS158N Datasheet
DM74LS157<br>• DM74LS158 Quad 2-Line to 1-Line Data Selectors/Multiplexers
| Part | Datasheet |
|---|---|
DM74LS158N |
DM74LS158N (pdf) |
| Related Parts | Information |
|---|---|
DM74LS157N |
DM74LS157N |
| PDF Datasheet Preview |
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| DM74LS157 • DM74LS158 Quad 2-Line to 1-Line Data Selectors/Multiplexers DM74LS157 • DM74LS158 Quad 2-Line to 1-Line Data Selectors/Multiplexers These data selectors/multiplexers contain inverters and drivers to supply full on-chip data selection to the four output gates. A separate strobe input is provided. A 4-bit word is selected from one of two sources and is routed to the four outputs. The DM74LS157 presents true data whereas the DM74LS158 presents inverted data to minimize propagation delay time. • Expand any data input point • Multiplex dual data buses • Generate four functions of two variables one variable is common • Source programmable counters s Buffered inputs and outputs s Typical Propagation Time DM74LS157 9 ns DM74LS158 7 ns s Typical Power Dissipation DM74LS157 49 mW DM74LS158 24 mW Ordering Code: Order Number Package Number Package Description DM74LS157M M16A 16-Lead Small Outline Integrated Circuit SOIC , JEDEC MS-012, Narrow DM74LS157SJ M16D 16-Lead Small Outline Package SOP , EIAJ TYPE II, 5.3mm Wide DM74LS157N N16E 16-Lead Plastic Dual-In-Line Package PDIP , JEDEC MS-001, Wide DM74LS158M M16A 16-Lead Small Outline Integrated Circuit SOIC , JEDEC MS-012, Narrow DM74LS158N N16E 16-Lead Plastic Dual-In-Line Package PDIP , JEDEC MS-001, Wide Devices also available in Tape and Reel. Specify by appending the suffix letter “X” to the ordering code. Connection Diagrams DM74LS157 DM74LS158 2000 Fairchild Semiconductor Corporation DS006396 DM74LS157 • DM74LS158 Function Table H = HIGH Level L = LOW Level X = Don’t Care Strobe H L Logic Diagrams Inputs Select DM74LS157 Output Y DM74LS157 DM74LS158 DM74LS158 DM74LS157 • DM74LS158 Absolute Maximum Ratings Note 1 Supply Voltage Input Voltage Operating Free Air Temperature Range 0°C to +70°C Storage Temperature Range −65°C to +150°C Note 1 The “Absolute Maximum Ratings” are those values beyond which the safety of the device cannot be guaranteed. The device should not be operated at these limits. The parametric values defined in the Electrical Characteristics tables are not guaranteed at the absolute maximum ratings. The “Recommended Operating Conditions” table will define the conditions for actual device operation. DM74LS157 Recommended Operating Conditions VCC VIH VIL IOH IOL TA Parameter Supply Voltage HIGH Level Input Voltage LOW Level Input Voltage HIGH Level Output Current LOW Level Output Current Free Air Operating Temperature DM74LS157 Electrical Characteristics over recommended operating free air temperature range unless otherwise noted Parameter Conditions Input Clamp Voltage VCC = Min, II = −18 mA HIGH Level Output Voltage VCC = Min, IOH = Max, VIL = Max, VIH = Min LOW Level VCC = Min, IOL = Max, VIL = Max, VIH = Min Output Voltage IOL = 4 mA, VCC = Min Input Current Max VCC = Max |
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